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Java Program to use all the methods defined by StringBuffer class which are different from String class – Q45

January 23, 2009 Leave a comment

Q45: Java Program to use all the methods defined by StringBuffer class which are different from string class.

class Str_Buffer{
	
	public static void main(String args[]){
		StringBuffer sb = new StringBuffer("Hello");

		System.out.println("buffer before= " + sb);
		System.out.println("charAt(1) before= " + sb.charAt(1));
		
		sb.setCharAt(1, 'i');
		sb.setLength(2);
		
		System.out.println("buffer after= " + sb);
		System.out.println("charAt(1) after= " + sb.charAt(1));
	}
}

… from College notes (BCA/MCA assignments):


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Java Program to use all the methods defined by string class (substring, indexOf, length, charAt, getchars etc) – Q44

January 22, 2009 Leave a comment

Q44: Java Program to use all the methods defined by string class (substring, indexOf, length, charAt, getchars etc).

class StringMethods{
	public static void main(String args[]){
	    String s = "This is a demo of the getchars method.";
		int start = 10;
		int end = 14;
		char buf[] = new char[end - start];
		s.getChars(start, end, buf, 0);
	
		System.out.println(buf);
		String org = "This is a test. This is, too.";
		String search = "is";
		String sub = "was";
		String result = "";
		int i;
		
		do{
			System.out.println(" ");
			System.out.println(org);
			i = org.indexOf(search);
			if(i != -1){
				result = org.substring(0, i);
				result = result + sub;
				result = result + org.substring(i + search.length());
				org = result;
			}
		}while(i != -1);
	}
}

… from College notes (BCA/MCA assignments):


Categories: Java Tags: